.eslintrc.json

{
    "env": {
        "browser": true,
        "es6": true
    },
    "plugins": [],
    "extends": [],
    "parserOptions": {
        "ecmaVersion": 7,
        "sourceType": "module"
    },
    "ignorePatterns": [
        "*",
        "**/*.*",
        "!public/",
        "!public/javascripts/",
        "!public/javascripts/*",
        "!public/javascripts/**/*",
        "public/javascripts/Admin/build/*",
        "public/javascripts/common/detectMobileBrowser.js",
        "public/javascripts/common/isMobile.js",
        "public/javascripts/common/Panomarker.js",
        "public/javascripts/Gallery/build/*",
        "public/javascripts/Help/build/*",
        "public/javascripts/lib/*",
        "public/javascripts/Progress/build/*",
        "public/javascripts/SVLabel/build/*",
        "public/javascripts/SVValidate/build/*"
    ],
    "rules": {
        "capitalized-comments": ["warn", "always"],
        "comma-style": "error",
        "curly": ["error", "multi-line", "consistent"],
        "eol-last": ["error", "always"],
        "eqeqeq": ["error", "always"],
        "indent": "error",
        "keyword-spacing": "error",
        "max-len": ["warn", {"code": 120}],
        "no-spaced-func": ["error"],
        "no-tabs": "error",
        "no-trailing-spaces": ["error"],
        "no-unused-vars": "warn",
        "one-var": ["error", "never"],
        "padding-line-between-statements": [
            "error",
            { "blankLine": "always", "prev": "function", "next": "*"},
            { "blankLine": "always", "prev": "*", "next": "function"}
        ],
        "quotes": ["error", "single"],
        "semi": "error",
        "spaced-comment": "error",
        "space-before-blocks": ["error", "always"],
        "space-in-parens": ["error", "never"],
        "no-var": "error",
        // Got most of the below rules from Airbnb style guide:
        // https://github.com/airbnb/javascript/blob/master/packages/eslint-config-airbnb-base/rules/es6.js
        "arrow-parens": ["error", "always"],
        "arrow-spacing": ["error", { "before": true, "after": true }],
        "constructor-super": "error",
        "generator-star-spacing": ["error", "after"],
        "no-class-assign": "error",
        "no-confusing-arrow": ["error", { "allowParens": true }],
        "no-const-assign": "error",
        "no-dupe-class-members": "error",
        "no-duplicate-imports": "error",
        "no-new-symbol": "error",
        "no-this-before-super": "error",
        "no-useless-computed-key": "error",
        "no-useless-constructor": "error",
        "no-useless-rename": ["error", { "ignoreDestructuring": false, "ignoreImport": false, "ignoreExport": false }],
        "object-shorthand": ["error", "always", { "ignoreConstructors": false, "avoidQuotes": true }],
        "prefer-arrow-callback": ["error", { "allowNamedFunctions": false, "allowUnboundThis": true }],
        "prefer-const": ["error", { "destructuring": "any", "ignoreReadBeforeAssign": true }],
        "prefer-numeric-literals": "error",
        "prefer-rest-params": "error",
        "prefer-spread": "error",
        "prefer-template": "error",
        "require-yield": "error",
        "rest-spread-spacing": ["error", "never"],
        "sort-imports": ["off", {
            "ignoreCase": false,
            "ignoreDeclarationSort": false,
            "ignoreMemberSort": false,
            "memberSyntaxSortOrder": ["none", "all", "multiple", "single"]
        }],
        "symbol-description": "error",
        "template-curly-spacing": "error",
        "yield-star-spacing": ["error", "after"]
    }
}